基于FPGA的频谱分析系统的设计与实现  

The Design and Realization of Spectrum Analysis System Based on FPGA

作　　者：陈至坤[1] 李胜[1] 陈韬[2] 康辉[3] 孙晓磊[4] 

机构地区：[1]河北理工大学计算机与自动控制学院,河北唐山063000 [2]天津市德力电子仪器有限公司,天津300113 [3]南开大学信息技术科学学院,天津300071 [4]天津大学电信学院,天津300072

出　　处：《无线电工程》2010年第7期19-21,28,共4页Radio Engineering

摘　　要：设计与实现了一种以FPGA为核心的实时频谱分析系统。系统包含"实时频谱监测"和"实时频谱仪"2种频谱分析模式。"实时频谱监测"模式采用FFT算法设计实现,用于对信号的实时监测;"实时频谱仪"模式采用DFT算法设计实现,用于信号的细致分析。实验证明,系统充分利用了FPGA芯片的资源,具有实时性好、频谱分析参数可调、多通道循环切换分析等特点。目前该系统已成功应用于HFC双向网络反向通道噪声的频谱分析和监测之中。A spectrum analysis system is designed and realized. The system includes two spectral analysis models of Real-Time Spectrum Monitoring and Real-Time Spectrum Analyzer. In Real-Time Spectrum Monitoring mode, FFT algorithms are used for real-time monitoring of signals. In Real-Time Spectrum Analyzer mode, DFr algorithms are used for detailed analysis of the signal. Experiments show that the system made full use of the resources of FPGA chips. The system features good real-time performance, adjustable spectral analysis parameters, multi-channel switching cycle analysis and so on. At present, the system has been successfully applied to HFC network upstream channel noise spectrum analysis and monitoring.

关 键 词：频谱分析 FPGA FFT DFT 

分 类 号：TN911.72[电子电信—通信与信息系统]